718. 最长重复子数组（连续）

718. 最长重复子数组

dp[i][j] ：以下标i - 1为结尾的A，和以下标j - 1为结尾的B，最长重复子数组长度为dp[i][j]。
dp[i][j] = dp[i - 1][j - 1] + 1;

class Solution {
public:
    int findLength(vector<int>& A, vector<int>& B) {
        vector<vector<int>> dp (A.size() + 1, vector<int>(B.size() + 1, 0));
        int result = 0;
        for (int i = 1; i <= A.size(); i++) {
            for (int j = 1; j <= B.size(); j++) {
                if (A[i - 1] == B[j - 1]) {
                    dp[i][j] = dp[i - 1][j - 1] + 1;
                }
                if (dp[i][j] > result) result = dp[i][j];
            }
        }
        return result;
    }
};